title: Early pathological changes in the parkinsonian brain demonstrated by diffusion tensor MRI.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D016880:Anisotropy; D016022:Case-Control Studies; D038524:Diffusion Magnetic Resonance Imaging; D018450:Disease Progression; D005116:Extrapyramidal Tracts / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D010300:Parkinson Disease / Q000175:diagnosis / Q000473:pathology*; D011954:Receptors, Dopamine; D012720:Severity of Illness Index
chemical_list: D011954:Receptors, Dopamine